Centrifugal Casting and ReBabbitting

Why should you choose to centrifugally cast a babbitt bearing?

  • By spinning a bearing at the proper RPM, the molten Babbitt can be poured under pressure. This centrifugal force combined with rapid cooling will provide the best bond, and bearing integrity.
  • This process ensures that the poured babbitt is free of impurities, gasses, or imperfections. Thus providing the best bond strength, and extending the life of your bearing!
  • Fusion Babbitting will provide ultrasonic bond certification, and dye penentrant testing.
  • Fusion also maintains an inventory of certified babbitt, allowing Fusion to match any OEM specification of babbitt that your bearing would require.

Fusion also employs two different sized centrifugal spin casting machines. Our largest spinner can cast a bearing with an outside diameter of 72″ and up to 7000 lbs. Our smaller spinner can cast a bearing with an outside diameter of 36″ and up to 1500lbs. The size, mass and configuration of your bearing, will determine the machine we use.

Standard Babbitt Specifications

BABBITT SPEC. NO. TIN % COPPER % ANTIMONY % LEAD % ARSENIC %
ASTM B23 – 49 GR.1 90 – 92 4 – 5 4 – 5 .35 max .10 max
ASTM B23 – 49 GR.2 88 – 90 3 – 4 7 – 8 .35 max .10 max
ASTM B23 – 49 GR.3 83 – 85 7.5 – 8.5 7.5 – 8.5 .35 max .10 max
SAE 11 86 – 88 5 – 6 6 – 7 .35 max .10 max
SAE 12 88 – 90 3 – 4 7.25 – 7.50 .35 max .10 max
QQT-390 GR.2 88 – 90 4 – 5 7 – 8 .35 max .10 max
QQT-390 GR.3 83 – 85 7.5 – 8.5 7.5 – 8.5 .35 max .10 max
ACM-3021 88 – 90 3 – 4 7 – 8 .05 max .01 max
ACM-3022 82.5 – 84.5 5 – 6 10 – 12 .50 max .10 max

Quality of Bond

Fusion Babbitting procedures ensure the highest Quality Bond in the industry 98-100% mechanically and chemically. We will provide Ultrasonic Bond Certifications to validate bearing quality.